Hmm, honestly I'd check with your pedia on this one, kasi bawat baby is different and at 5 months there's still a lot of development happening sa digestive system nila. Most of my mum friends waited till around 6 months before introducing juices, and even then ginamit nila ang diluted version, pero seryoso better safe than sorry kaya better ask your doctor muna especially if baby is exclusively breastfed or formula pa lang.